well i had sent my oil to analysis and got back the results.
i used royal purple 20w50 and it had 1,700 miles on it, engine has bout 5k miles.

according to the analysis they found a very high amount of chrome. also some iron,copper, and lead. the latter metals he say are prob from break in (done like 3 oil changes so far). it had a very high amount of fuel 6% which caused my oil to be like 5w30.

they are saying the chrome can be showing a problem with the apex seals and thats also prob y i have so much fuel in oil.

any ideas of what may be going on?

idk bout apex seals but rotor housings have chrome dont they?

 

Sounds like used housings were used in the rebuild. The housings are losing chrome, probably around the spark plugs and edges and this is causing poor sealing. You can't do anything about so don't worry about it until the engine fails or you have the time and money to do another rebuild.

 

how is the chrome from the rotor housings getting INTO the oil?

 

One thing that many don't understand about RP is that for the first few oil changes you are going to get higher metal content than most other oils due to the micropolishing effect the oil has. Keep using it. In 3 more changes, send another sample back in. It's not very accurate to change the oil you use and then send it in after the first change.

 

Are you premixing?

Also, where did you send it for analysis?

 

i never knew this about them. is that common to the higher end synthetics?

+1

 

Blackstone Labs is the most common place to send them.

 

the same way the fuel does, past the seals

 

o i didnt know that, thanx for the heads up.
yup penzoil 2 cycle full synthetic and i sent it to blackstone laboratories

ya it had used housings, do u think the chrome level will continue to be high?

 

Like rotary god said, the first oil change after a rebuild will have a high metal content. Be patient and put a a couple hundred easy miles on the engine. Keep the revs down.

 

i have, ive done 3 oil changes already

 

atkins says its prob from the bearings, i had new rotor bearings in rotors. 1,000 miles no boost and gradually raising revs for break in.

 

...

 

Thank you for sharing the information it helped me a lot.

 

me?

 

I'm going to refer to this quote from the first post.

RP has a micropolishing effect on metals. For the first few oil changes using RP you will see higher metal content. After the metal gets completely polished, the amount of metal in the oil will fall off. Blackstone Labs has no clue what they are looking at when it comes to analysis of RP oils and only state what "might" have caused it. How many oil changes you have on the engine are irrelevant. How many you have with RP is. Go through several oil changes before you send another sample in. Then when you get it back ignore it and throw it in the trash as it isn't telling you anything useful.

Keep in mind bearings never ever "break in". They can't. If everything is working properly there should never be any metal to metal contact as there should always be a film of oil present. An old bearing can not be more reliable than a new one or vice versa. New ones that fail are almost always caused by an error on the part of the person who installed it and unfortunately most people mess this part up.

Forget the oil analysis and just enjoy your car. A UOA isn't going to change anything no matter what it says.

 

o ok thats good to know,thanx for the info. is that micro poshing effect good?
also where u get the info bout that?